Feb 27, 2020
The biggest cosmic explosion on record has been detected –an event so powerful that it punched a dent the size of 15 Milky Ways in the surroundingspace. （人类观测到的最大规模宇宙爆炸，炸出了相当于15个银河系大小的深坑）
The explosion happened in the Ophiuchus galaxy cluster（蛇夫座银河星团）,about 390 million light years from earth（爆炸点距地球3.9亿光年）
Today is World NGO Day
Founded by Marcis Liors Skadmanis, World NGO Day was firstobserved on Feb 27, 2014.
It’s a day to honor all non-governmental and non-profitorganizations and recognize their impact on the world.
Feb 27, 1936
Ivan Pavlov, Russian physiologist, died at age 86.
Photo - dogalize.com/2018/04/pavlov-dog-classical-conditioning/